On a long, ten hour drive, I stopped at a rest stop to go to the bathroom. There was no one else there when I pulled up. As soon as I stepped out, there was another car right by the curb. The car door was open and a blond was in front of a man. He looked up at me and smiled. I just smiled back and watched. He took out his privates and showed me. Then, the blond went back to her oral sex. He was so excited that a woman was watching him. I was about four feet from them. I watched the whole show, and then got back into my car. I was so excited the rest of the trip.